ava.lang.IllegalStateException: Failed to introspect Class [xxxxxxxxImpl] from ClassLoader-Autowired

1.去掉相关类 如RestClientSupport

2.引入依赖（通过bns，去查已有相关依赖的其他项目。jar包的pom.xml中有版本号）

Caused by: java.lang.ClassNotFoundException: com.xxxxsuperhero.util.bns.BnsClient
   at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
   ... 51 common frames omitted

总是提示无法注入Service或者Dao中的Bean。SpringBoot项目的Bean装配默认规则是根据Application类所在的包位置从上往下扫描！
“Application类”是指SpringBoot项目入口类。这个类的位置很关键：如果Application类所在的包为：com.demo.module，则只会扫描com.demo.module包及其所有子包，如果service或dao所在包不在com.demo.module及其子包下，则不会被扫描！所以需在application启动类中加上@MapperScan("com.*.dao")//加上你项目的dao或service所在文件位置即可
@SpringBootApplication

由于我的代码框架不是Springboot，使用bean的注解，就报错，需要两步

1. 接口上加注解：

@SpringBootApplication

2.application启动类中加上

@MapperScan("com.*.dao")//加上你项目的dao或service所在文件位置即可 @SpringBootApplication

@MapperScan("com.*.sercice")//加上你项目的dao或service所在文件位置即可
@SpringBootApplication(scanBasePackages = {"com.*.sercice"})

3.注意实现类上要有注解 Service or Component

2.服务加上注解

@Component或者@Service

ps：

@Component spring基础的注解，被spring管理的组件或bean

@Repository 用于持久层，数据库访问层

@Service 用于服务层，处理业务逻辑

@Controller 用于呈现层，(spring-mvc)

2022-11-07 14:46:49.446 ERROR [main] o.s.boot.SpringApplication.reportFailure(837) : [logid:, spanId:] Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'logPresentController': Unsatisfied dependency expressed through field 'logProcessorService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'LogProcessorService': Unsatisfied dependency expressed through field 'logProcessorClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'logProcessorClient': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [xxxxxxxxImpl] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
   at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)
   at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
   at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
   at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
   at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
   at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
   at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
   at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
   at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
   at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
   at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
   at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
   at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
   at com.dxxxxxxxxxxxxx.ServerApplication.main(ServerApplication.java:22)

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'LogProcessorClient': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [com.xxxxxxxxxxxxxLogProcessorClientImpl] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]

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